Pretensioning mechanism for tension element drive systems

Details Pretensioning mechanism for tension element drive systems Pretensioning mechanism for tension element drive systems

1993-08-04

1995-02-14

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Hand operated

254220, 2423885, B25B 2500, B66F 1900

Patent

active

053884809

ABSTRACT:
A pretensioning mechanism for tension element drives includes a drive pinion including a pinion shaft and a pinion sleeve; a first tension element end anchor on the pinion shaft for securing one end of a tension element wound around the drive pinion in a first direction and a second tension element end anchor on the pinion sleeve for securing the end of another tension element wound around the drive pinion in a second, opposite direction; and a worm drive including a worm gear on one of the pinion sleeve and pinion shaft and a worm on the other of the pinion sleeve and pinion shaft for relatively counter-rotating said pinion shaft and pinion sleeve for simultaneously in a single action adjusting and fixing the pretension on the tension element.

REFERENCES:
patent: 796720 (1905-08-01), Hanscom
patent: 3240473 (1966-03-01), Coffey et al.

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